[clang] [Clang] Add diagnostic when scoped enumeration requires an explicit conversion for binary operations (PR #152698)

[Yanzuo Liu via cfe-commits]

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@@ -1,5 +1,6 @@
 // RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++11 -verify -triple x86_64-apple-darwin %s
 // RUN: %clang_cc1 -fsyntax-only -pedantic -std=c++17 -verify -triple x86_64-apple-darwin %s
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zwuis wrote:

We can change `-verify` to `-verify=expected,cxx11-17` so that we can use `// cxx11-17-warning {{...}}` instead of adding `#if` block for some test cases. See <https://clang.llvm.org/docs/InternalsManual.html#testing>.

https://github.com/llvm/llvm-project/pull/152698